Classification
512 - Algebra
548
516 - Geometry
50
530 - Physics
44
514 - Topology
36
515 - Analysis
35
510 - Mathematics
26
511 - General principles of mathematics
26
519 - Probabilities & applied mathematics
13
539 - Modern physics
10
004 - Data processing & computer science
5
620 - Engineering & allied operations
5
006 - Special computer methods
3
500 - Natural sciences & mathematics
3
140 - Specific philosophical schools
2
330 - Economics
2
518 - Numerical analysis
2
546 - Inorganic chemistry
2
621 - Applied physics
2
000 - Computer science, information & general works
1
003 - Systems
1
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
320 - Political science
1
333 - Economics of land & energy
1
338 - Production
1
341 - Law of nations
1
342 - Constitutional & administrative law
1
363 - Other social problems & services
1
540 - Chemistry & allied sciences
1
542 - Techniques, equipment & materials
1
548 - Crystallography
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
658 - General management
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1